Traditional Culture Encyclopedia - Weather forecast - Why is there a strong wind when there is a fire?

Why is there a strong wind when there is a fire?

If hot air flows upward, a vacuum will be formed, which is obviously impossible. So when there is a fire, the air near the ground will flow and form wind, just like the wind at the air inlet of a coal stove ~ ~ I don't know if I am satisfied with this answer, but my own idea has not been proved by experiments.